I have a '87 base model RX-7. It's a 4 bolt and I think my pattern is 4x114.3. Is that right? And what is the offset?

Thanks!

 

you may wish to use the search function found in the upper right hand corner of this page next time and read the thread sticky on the top of the 2nd gen specific forum, on newbies before posting.

All FCs have a factory wheel offset of 40mm or 40 ET.

Welcome to the board

 

What's an FC?

 

code name for YOUR 7

 

Welcome newbie.

All of the 86-92 RX-7 wheels have a 114.3mm (4.5") pitch and 40mm (1.57") offset. This goes for both 4 and 5-lug wheels. Some spare tires have a 30mm offset wheel.

FC is the part of the VIN code which denotes an 86-92 RX-7 body style. See here for more VIN decoding:
http://members.ij.net/mrmazda/mdictionary.html

And see here for more acronym and abbreviation info, as well as a lot of other good RX-7 stuff:
http://fc3s-pro.com/sitemap.html

Here is another good site. See How-To's/Manual for a free online 86-88 service manual. It's actually a 1988 manual, but will work for nearly everything on your 1987 car.
http://fc3s.org/